Migrate to the new micrometer-docs-generator (#2535)
Migrate to the new micrometer-docs-generator (#2535)

As per https://github.com/micrometer-metrics/micrometer-docs-generator/wiki/1.0.0-Migration-Guide
"
micrometer-docs-generator-metrics and micrometer-docs-generator-spans are deprecated
in favor of the new module micrometer-docs-generator which generates
both metrics and spans (and observation conventions) documents.
"
reactor/reactor-netty,reactor/reactor-netty